This document discusses cyber crime and security. It defines cyber crime as unlawful acts using computers as either a tool or target. Some key events in cyber crime history include the first recorded cyber crime in 1820, first spam email in 1978, and first computer virus in 1982. The document outlines different types of cyber crimes like hacking, denial of service attacks, and software piracy. It emphasizes the importance of internet security and recommends practices like using antivirus software, firewalls, updated software, backups, and privacy policies to enhance security.